128 HATCH EXPERIMENT STATION. [Jan. 



III. NOTES OF FIELD EXPERIMENTS WITH 

 TOBACCO IN MASSACHUSETTS, 1893-96. 



CHARLES A. GOESSMANN. 



The experiments briefly described in the following pages 

 were carried on with the co-operation of the Valley Tobacco 

 Experiment Association of Massachusetts. 



The officers of this organization consisted of President 

 L. A. Crafts of Whately, Vice-President C. L. Fowler of 

 Westfield, Secretary and Treasurer G. D. Fisk of Agawam; 

 Board of Directors, W. A. Porter of Agawam and C. L. 

 Warner of Hatfield. 



Hatfield, Westfield and Agawam were chosen for the loca- 

 tion of the experiments. The selection of the particular 

 field in each place was left to a special committee of the 

 association. In all cases a deep, sandy loam was selected 

 for the trial. 



The same kind and the same amount of fertilizing in- 

 gredients were used in all cases, and the observations con- 

 tinued for three successive years. For details see Bulletin 

 No. 47, April, 1897. 



The variety of tobacco selected for the trial was Havana 

 seed. For the purpose of securing uniformity of fertilizer 

 during the years of the experiment, it was decided to pur- 

 chase at once, as far as advisable, enough of each kind to 

 supply the needed materials for three years. 



Statement of Fertilizers used upon Different Plots. 

 The fertilizer mixture used during the entire time of 

 observation contained in all cases, per acre : — 



Pounds. 



Potassium oxide (available) 300 



Nitrogen (available), 100 



Phosphoric acid (available), 60 



One-fourth of the nitrogen was in all cases used in the 

 form of nitrates of soda or potash, to secure a uniform con- 



